As you may know by now, MySQL 8.0.2 DMR is out ! \o/ Many features have been added (see Geir Høydalsvik‘s announcement) and of course the replication also brought new features and improvements (see this post from Luís Soares). But some improvements in the monitoring broke the added sys view used by ProxySQL to monitor the state of a member … Read More
When using MySQL Group Replication, it’s possible that some members are lagging behind the group. Due to load, hardware limitation, etc… This lag can become problematic to keep good certification behavior regarding performance and keep the possible certification failure as low as possible. Bigger is the applying queue bigger is the risk to have conflicts with those not yet applied … Read More
MySQL InnoDB Cluster (or only Group Replication) becomes more and more popular. This solution doesn’t attract only experts anymore. On social medias, forums and other discussions, people are asking me what it the best way to migrate a running environment using traditional asynchronous replication [Master -> Slave(s)] to InnoDB Cluster.
Today I presented MySQL InnoDB Cluster at the Helsinki MySQL User Group. To demonstrate how easy it’s to deploy a cluster with MySQL Shell and used the prompt that will be part of a future release just because it’s beautiful. If you also want to see how it looks like, just check the video below: There were several MongoDB … Read More
Taking a logical backup of a member of a Group Replication Cluster is not something very easy. Currently (5.7.17, 5.7.18 or 8.0.0) if you want to use mysqldump to take a logical backup of your dataset, you need to lock all the tables on the member you are taking the dump. Indeed, a single transaction can’t be used as savepoints … Read More